Elektruck Posted September 13, 2011 Report Share Posted September 13, 2011 High, Yesterday I finished my gm5x5x5 project from last bulkorder, Version 1.1. Everything seems to work fine except for my forth midi input. If I put a signal in witch works on the other inputs, it's not working on input 4, no flashing LED's nor midi input in my software. I checked everything, changed both corresponding IC's, still nothing. Anybody any idea?! Greetings, Roel Quote Link to comment Share on other sites More sharing options...
nuke Posted September 13, 2011 Report Share Posted September 13, 2011 first i would check the optocoupler...in my last order of 10 pcs. i got 3 broken ones...so maybe that one is dead...just swap it with a working one and check again. Quote Link to comment Share on other sites More sharing options...
Antix Posted September 13, 2011 Report Share Posted September 13, 2011 Check the soldering of the pin 21 on GM5 chip too Quote Link to comment Share on other sites More sharing options...
Elektruck Posted September 14, 2011 Author Report Share Posted September 14, 2011 Thanks for the answers. I swept the optocopler with a working one with no result. I measured pin 21 (counter clockwise from the spot) and soldering seems OK. But thanks anyway! Quote Link to comment Share on other sites More sharing options...
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